const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatTimeOneYear = date => {
  const year = date.getFullYear()+1
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('-') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatTimeYear = (date,y,m,d) => {
  if (d){}else{
    d=0
  }
  var year = date.getFullYear() + y
  var month = date.getMonth() + 1 + m
  if (month>12){
    year = year + parseInt(month / 12)
    month = month % 12
  }
  //设置了天数减一天
  const day = date.getDate()-d
  return [year, month, day].map(formatNumber).join('-')
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : '0' + n
}

function json2Form(json) {
  var str = [];
  for (var p in json) {
    str.push(encodeURIComponent(p) + "=" + encodeURIComponent(json[p]));
  }
  return str.join("&");
}

module.exports = {
  json2Form: json2Form,
  formatTime: formatTime,
  formatTimeOneYear: formatTimeOneYear,
  formatTimeYear: formatTimeYear
}
